Buggy code:
protected XMLDTDHandler fDTDHandler ; protected XMLDTDSource fDTDSource ; protected XIncludeHandler fParentXIncludeHandler ; protected int fBufferSize = XMLEntityManager . DEFAULT_BUFFER_SIZE ; protected String fParentRelativeURI ; protected XMLParserConfiguration fChildConfig ; protected XMLLocator fDocLocation ; protected XIncludeNamespaceSupport fNamespaceContext ; protected XMLErrorReporter fErrorReporter ; protected XMLEntityResolver fEntityResolver ; protected SecurityManager fSecurityManager ; protected XIncludeTextReader fXInclude10TextReader ; protected XIncludeTextReader fXInclude11TextReader ; protected XMLResourceIdentifier fCurrentBaseURI ; protected IntStack fBaseURIScope ; protected Stack fBaseURI ; protected Stack fLiteralSystemID ; protected Stack fExpandedSystemID ; protected IntStack fLanguageScope ; protected Stack fLanguageStack ; protected String fCurrentLanguage ; protected ParserConfigurationSettings fSettings ; private int fDepth ; private static final int INITIAL_SIZE = 8 ; private boolean [ ] fSawInclude = new boolean [ XIncludeHandler . INITIAL_SIZE ] ; private boolean [ ] fSawFallback = new boolean [ XIncludeHandler . INITIAL_SIZE ] ; private int [ ] fState = new int [ XIncludeHandler . INITIAL_SIZE ] ; private Vector fNotations ; private Vector fUnparsedEntities ; private boolean fSendUEAndNotationEvents ; private boolean fIsXML11 ; private boolean fInDTD ; public XIncludeHandler ( ) { } public void reset ( XMLComponentManager componentManager ) throws XNIException { } public String [ ] getRecognizedFeatures ( ) { } public void setFeature ( String featureId , boolean state ) throws XMLConfigurationException { } public String [ ] getRecognizedProperties ( ) { } public void setProperty ( String propertyId , Object value ) throws XMLConfigurationException { } public Boolean getFeatureDefault ( String featureId ) { } public Object getPropertyDefault ( String propertyId ) { } public void setDocumentHandler ( XMLDocumentHandler handler ) { } public XMLDocumentHandler getDocumentHandler ( ) { } public void startDocument ( XMLLocator locator , String encoding , NamespaceContext namespaceContext , Augmentations augs ) throws XNIException { } public void xmlDecl ( String version , String encoding , String standalone , Augmentations augs ) throws XNIException { } public void doctypeDecl ( String rootElement , String publicId , String systemId , Augmentations augs ) throws XNIException { } public void comment ( XMLString text , Augmentations augs ) throws XNIException { } public void processingInstruction ( String target , XMLString data , Augmentations augs ) throws XNIException { } public void startElement ( QName element , XMLAttributes attributes , Augmentations augs ) throws XNIException { ( fDepth ) ++ ; setState ( getState ( ( ( fDepth ) - 1 ) ) ) ; processXMLBaseAttributes ( attributes ) ; processXMLLangAttributes ( attributes ) ; if ( isIncludeElement ( element ) ) { boolean success = this . handleIncludeElement ( attributes ) ; if ( success ) { setState ( XIncludeHandler . STATE_IGNORE ) ; } else { setState ( XIncludeHandler . STATE_EXPECT_FALLBACK ) ; } } else if ( isFallbackElement ( element ) ) { this . handleFallbackElement ( ) ; } else if ( hasXIncludeNamespace ( element ) ) { if ( getSawInclude ( ( ( fDepth ) - 1 ) ) ) { reportFatalError ( "IncludeChild" , new Object [ ] { element . rawname } ) ; } if ( getSawFallback ( ( ( fDepth ) - 1 ) ) ) { reportFatalError ( "FallbackChild" , new Object [ ] { element . rawname } ) ; } if ( ( ( fDocumentHandler ) != null ) && ( ( getState ( ) ) == ( XIncludeHandler . STATE_NORMAL_PROCESSING ) ) ) { augs = modifyAugmentations ( augs ) ; attributes = processAttributes ( attributes ) ; <START_BUG> fDocumentHandler . emptyElement ( element , attributes , augs ) ; <END_BUG> } } else if ( ( ( fDocumentHandler ) != null ) && ( ( getState ( ) ) == ( XIncludeHandler . STATE_NORMAL_PROCESSING ) ) ) { augs = modifyAugmentations ( augs ) ; attributes = processAttributes ( attributes ) ; fDocumentHandler . startElement ( element , attributes , augs ) ; } } public void emptyElement ( QName element , XMLAttributes attributes , Augmentations augs ) throws XNIException { } public void endElement ( QName element , Augmentations augs ) throws XNIException { } public void startGeneralEntity ( String name , XMLResourceIdentifier resId , String encoding , Augmentations augs ) throws XNIException { } public void textDecl ( String version , String encoding , Augmentations augs ) throws XNIException { } public void endGeneralEntity ( String name , Augmentations augs ) throws XNIException { } public void characters ( XMLString text , Augmentations augs ) throws XNIException { } public void ignorableWhitespace ( XMLString text , Augmentations augs ) throws XNIException { } public void startCDATA ( Augmentations augs ) throws XNIException { } public void endCDATA ( Augmentations augs ) throws XNIException { } public void endDocument ( Augmentations augs ) throws XNIException { } public void setDocumentSource ( XMLDocumentSource source ) { } public XMLDocumentSource getDocumentSource ( ) { } public void attributeDecl ( String elementName , String attributeName , String type , String [ ] enumeration , String defaultType , XMLString defaultValue , XMLString nonNormalizedDefaultValue , Augmentations augmentations ) throws XNIException { } public void elementDecl ( String name , String contentModel , Augmentations augmentations ) throws XNIException { } public void endAttlist ( Augmentations augmentations ) throws XNIException { } public void endConditional ( Augmentations augmentations ) throws XNIException { } public void endDTD ( Augmentations augmentations ) throws XNIException { } public void endExternalSubset ( Augmentations augmentations ) throws XNIException { } public void endParameterEntity ( String name , Augmentations augmentations ) throws XNIException { } public void externalEntityDecl ( String name , XMLResourceIdentifier identifier , Augmentations augmentations ) throws XNIException { } public XMLDTDSource getDTDSource ( ) { } public void ignoredCharacters ( XMLString text , Augmentations augmentations ) throws XNIException { } public void internalEntityDecl ( String name , XMLString text , XMLString nonNormalizedText , Augmentations augmentations ) throws XNIException { } public void notationDecl ( String name , XMLResourceIdentifier identifier , Augmentations augmentations ) throws XNIException { } public void setDTDSource ( XMLDTDSource source ) { } public void startAttlist ( String elementName , Augmentations augmentations ) throws XNIException { }

Fix:
fDocumentHandler . startElement ( element , attributes , augs ) ;